At least 14 people killed after bomber blows himself up at police checkpoint in the mainly Shia district of Kadhimiya.

A suicide bomber has detonated an explosive vest near a security checkpoint in northwest Baghdad, Iraqi officials said.

A police officer told the Associated Press news agency that an attacker on foot blew himself up on Sunday morning at one of the entrances to the Shia district of Kadhimiyah, killing at least 10 civilians and four policemen. Another 31 other people were wounded.

Sources at the Kadhimiya hospital, where victims of the blast were taken, said the death toll could rise as some of the wounded were in a critical condition.

Three more civilians were killed and 11 wounded in a bomb explosion in an outdoor market in Baghdad's western suburb of Abu Ghraib, another police officer said.

Two medical officials confirmed the casualty figures. All officials spoke on condition of anonymity as they were not authorized to release information.